integrated circuits electronic components 2501 90W TO-92 Power Charging Chip Ic Transistor DS2501


• 512 bits (DS2501–UNW) or 1024 bits (DS2502–UNW)
Electrically Programmable Read Only Memory
(EPROM) communicates with the economy of one signal plus ground
• Unique, factory-lasered and tested 64–bit registration
number (8–bit family code, 36–bit serialization, 12–bit
UniqueWare Identifier 5E7H, 8–bit CRC–tester)
assures absolute traceability because no two parts are
alike. Family code 91H for the DS2501–UNW, 89H for
the DS2502–UNW
• Built–in multidrop controller ensures compatibility with
other MicroLANTM products
• EPROM partitioned into two (DS2501–UNW) or four
(DS2502–UNW) 256–bit pages for randomly accessing
packetized data records
• Each memory page can be permanently write–protected to prevent tampering
• Device is an “add only” memory where additional data
can be programmed into EPROM without disturbing
existing data
• Reduces control, address, data, power and programming signals to a single pin
• Directly connects to a single port pin of a microprocessor and communicates at up to 16.3k bits per second
• Presence detector acknowledges when reader first
applies voltage
• Low cost TO–92 or 8–pin SOIC and TSOC surface
mount packages
• Reads over a wide voltage range of 2.8V to 6.0V from
–40°C to +85°C; programs at 11.5V to 12.0V from
–40°C to + 50°C

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